A Review of Floating Platform Concepts for Offshore Wind Energy Generation

2014 ◽  
Vol 136 (2) ◽  
Author(s):  
K. P. Thiagarajan ◽  
H. J. Dagher
Keyword(s):  
Wind Energy ◽  
Special Section ◽  
Clean Energy ◽  
Energy Generation ◽  
Structure Design ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Floating Platform ◽  
Offshore Structure ◽  
Wind Energy Generation

Literature relating to offshore wind energy generation is produced at a significant rate as research efforts are diverted to the emerging area of future clean energy. This paper presents an overview of recent research in the specific area of floating offshore structure design for wind energy. Earlier literature has broadly grouped these platforms into three categories based on their source of stability: (1) ballast stabilized (low center of gravity), e.g., spar, (2) mooring stabilized, e.g., tension leg platform, and (3) buoyancy or water-plane stabilized, e.g., semisubmersible. These concepts were modifications of similar structures used in the offshore oil and gas industry. Recent papers have presented further improvements to these designs, including active ballasting and control systems. These are examined for stability and global performance behavior and ease of operability and maintenance. The paper also attempts to examine efforts to bring such concepts to fruition. This paper sets the stage for other papers in the Special Session on University of Maine/DeepCWind Consortium within the Offshore Renewable Energy Symposium at OMAE 2012, which are archived in the special section of the Journal of Offshore Mechanics and Arctic Engineering.

State-of-the-Art Review of Floating Platform Concepts for Offshore Wind Energy Generation

2012 ◽  
Author(s):  
K. P. Thiagarajan ◽  
H. J. Dagher
Keyword(s):  
Wind Energy ◽  
Clean Energy ◽  
Energy Generation ◽  
Structure Design ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Floating Platform ◽  
Offshore Structure ◽  
Energy Potential ◽  
Wind Energy Generation

Literature relating to offshore wind energy generation is produced at a significant rate, as research efforts are diverted to the emerging area of future clean energy. This paper presents an overview of recent research in the specific area of floating offshore structure design for wind energy. Earlier literature has broadly grouped these platforms into three categories based on their source of stability: - Ballast stabilized (low center of gravity), e.g. spar - Mooring stabilized, e.g. Tension Leg Platform - Buoyancy or water-plane stabilized, e.g. semi-submersible. These concepts were modifications of similar structures used in the offshore oil and gas industry. Recent papers have presented further improvements to these designs including active ballasting and control systems. These are examined for stability and global performance behavior and ease of operability and maintenance. The paper also attempts to examine efforts to bring such concepts to fruition. Combined with this, the authors highlight activities that are ongoing in a consortium of industry and research institutions that is headed by the University of Maine. The origin of such a consortium is explained with reference to the future wind energy potential offshore Maine. This paper sets the stage for other papers in the Special Session on UMaine/ DeepCWind Consortium within the Offshore Renewable Energy Symposium at OMAE 2012.

A Risk Framework for Munitions and Explosives of Concern in Support of U.S. Offshore Wind Energy Development

2019 ◽  
Vol 53 (2) ◽  
pp. 6-20 ◽  
Author(s):  
Geoffrey Carton ◽  
Carter DuVal ◽  
Arthur Trembanis
Keyword(s):  
Risk Assessment ◽  
Wind Energy ◽  
Hazard Assessment ◽  
Risk Mitigation ◽  
Energy Generation ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Wind Energy Generation ◽  
Operation And Maintenance ◽  
Risk Framework

AbstractMunitions and explosives of concern (MEC) in U.S. waters can present a risk to the development and operation of offshore wind energy resources. Therefore, the U.S. Bureau of Ocean Energy Management requires offshore wind energy developers to evaluate the risk MEC poses to the development, operation, and maintenance of offshore wind energy generation and transmission systems. This article describes an MEC risk management framework consisting of the following steps: (1) MEC hazard assessment, (2) MEC risk assessment, (3) MEC risk validation, and (4) MEC risk mitigation. The MEC hazard assessment involves historical research to identify MEC potentially present in the development area. The MEC risk assessment evaluates the development activities and provides a relative MEC risk ranking for those activities. The developer determines the acceptability of these risks, and any potentially unacceptable MEC risks undergo risk validation through field surveys. The developer then considers the tolerability of the validated risks and develops and implements an appropriate MEC risk mitigation strategy based on actual site conditions. A risk framework provides a structured method to plan and operationalize the identification, evaluation, and mitigation of MEC risk throughout the development, operation, and maintenance life cycle of an offshore wind energy generation and transmission project.

Offshore Wind Energy Generation

2014 ◽  
Author(s):  
Olimpo Anaya-Lara ◽  
David Campos-Gaona ◽  
Edgar Moreno-Goytia ◽  
Grain Adam
Keyword(s):  
Wind Energy ◽  
Energy Generation ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Wind Energy Generation

scholarly journals Coastal and Offshore Wind Energy Generation: Is It Environmentally Benign?

Energies ◽  
2010 ◽  
Vol 3 (7) ◽  
pp. 1383-1422 ◽  
Author(s):  
Jennifer C. Wilson ◽  
Mike Elliott ◽  
Nick D. Cutts ◽  
Lucas Mander ◽  
Vera Mendão ◽  
...  
Keyword(s):  
Wind Energy ◽  
Energy Generation ◽  
Offshore Wind ◽  
Environmentally Benign ◽  
Offshore Wind Energy ◽  
Wind Energy Generation

Offshore wind energy generation has huge potential

2019 ◽  
Keyword(s):  
Wind Energy ◽  
International Energy Agency ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Chinese Firms ◽  
Energy Agency ◽  
Content Type ◽  
Wind Energy Generation ◽  
Cost Reductions ◽  
Order Books

Subject Offshore wind costs and potential. Significance The International Energy Agency (IEA) released a report on October 25 estimating that offshore wind capacity will rise 15-fold over the next two decades. Costs have been falling ahead of expectations and further cost reductions will help the sector to build more momentum. Impacts North European turbine producers and wind project developers see huge export potential, but Chinese firms will provide stiff competition. Offshore construction vessels will support rising offshore wind deployment and help to bolster currently weak shipyard order books. Governments and regulators will create supportive policies for offshore wind, but this will occur gradually and differently across regions.

Load on Turbine Blade Induced by Motion of Floating Platform and Design Requirement for the Platform

2007 ◽  
Author(s):  
Hideyuki Suzuki ◽  
Akira Sato
Keyword(s):  
Wind Energy ◽  
Wind Turbine ◽  
Turbine Blade ◽  
Bending Moment ◽  
Maximum Load ◽  
Offshore Wind ◽  
Offshore Wind Energy ◽  
Fatigue Load ◽  
Design Requirement ◽  
Floating Platform

Due to the limited land area and mountainous topography, Japan is not necessarily suited for land-based wind power generation. But potential of offshore wind energy around the country is huge and has ability to supply whole electricity of the country. Development of offshore wind energy is also a promising solution for establishing sustainable society in the country. Water depth around the country generally becomes sharply deeper with distance from the shoreline and floating platform is necessary to deploy wind turbines. This paper investigates effect of motion of floating platform on the strength of turbine blade, a key issue in designing floating wind turbine, and design requirement for floating platform was discussed. Inertial load induced in the turbine blade by the motion of platform and rotation of turbine was formulated. The formulated load on the blade was verified by experiment with rotating rod on the oscillating tower. Two analysis codes, structural analysis code of turbine blade and motion analysis code of SPAR type floating platform, were developed. The effect of platform motion on the bending moment induced in the blade was investigated using the codes and design requirements for the platform were investigated from a viewpoint of maximum load and fatigue load. From a series of analysis on 5MW wind turbine showed that maximum load on blade is increased by 10% for pitching with amplitude of 5degrees but sectional modulus must be increased by 50% for fatigue. It is concluded that the increase of maximum load on the blade due to the motion of floating platform is not serious but fatigue load can be significant. Design requirement for the motion of floating platform will be that the amplitude of pitching motion should be less than a few degrees so that the land-based wind turbine can be installed on the floating platform with minimum modification.

scholarly journals Wind Energy Analysis in the Coastal Region of Bangladesh

Energies ◽  
2021 ◽  
Vol 14 (18) ◽  
pp. 5628
Author(s):  
Khandaker Dahirul Islam ◽  
Thanansak Theppaya ◽  
Fida Ali ◽  
Jompob Waewsak ◽  
Tanita Suepa ◽  
...  
Keyword(s):  
Wind Energy ◽  
Carbon Emissions ◽  
Energy Security ◽  
Energy Analysis ◽  
Clean Energy ◽  
Energy Generation ◽  
Coastal Areas ◽  
Mapping Technique ◽  
Wind Energy Generation ◽  
Generation Capacity

Diversifying the energy mix of Bangladesh is becoming indispensable not only to improve its energy security, but also for a more sustainable economic development. This study focused on mapping the wind potential of southern coastal areas of Bangladesh to estimate the wind energy potential, along with the reduction in carbon emissions due to wind energy. Analysis of the carbon footprint was based on the annual energy production (AEP) from the selected low-wind turbine generators (WTGs). The time series-measured and -predicted wind data were incorporated with the high-resolution mesoscale and microscale wind re-source mapping technique at 60, 80, and 100 m above ground level (AGL). Coupling mesoscale and microscale modeling provided reliable mapping results for the commercially exploitable wind resource and was verified by ground-based wind measurement. The results revealed that, among the selected areas, two sites named Charfashion and Monpura have a promising annual mean wind speed of 7.3 m/s at 100 m AGL for energy generation. Different WTGs with ranges of 1–3.3 MW were used to estimate the wind energy generation capacity at different sites in the study area. A WTG with a 1 MW wind energy generation capacity installed at 60 m AGL in the selected site has the potential to produce 2.79 GWh/year of clean energy, reducing 1781.689 tons of CO2 per year, whereas a 3.3 MW WTG at 80 m AGL can produce 18.99 GWh/year of energy, reducing 12,098.54 tons of CO2 per year, and a 1.6 MW WTG at 100 m AGL produces 11.04 GWh/year of energy, cutting 7035.028 tons of CO2 per year. With its reliable scientific and time-tested wind energy estimation method, this research is very important for the development of wind energy in the southern coastal areas of Bangladesh to meet the increasing energy demands through initiating the development of renewable energy to improve the energy security and reduce the carbon emissions of the country.

Sign in / Sign up

Export Citation Format

Share Document